*{
    margin: 0;
    padding: 0;
    text-decoration: none;
    list-style: none;
}

.div1{
    width: 1190px;
    height: 652px;
    margin: 0 auto;
    background: url(../images/jingdong1.PNG) no-repeat;
    background-size: contain;
    margin-bottom: 30px;
}

.div2{
    width: 1190px;
    height: 260px;
    margin: 0 auto;
    background: url(../images/jingdong2.PNG) no-repeat;
    background-size: contain;
    margin-bottom: 30px;
}

.div3{
    width: 1190px;
    height: 600px;
    margin: 0 auto;
    background: url(../images/jingdong3.PNG) no-repeat;
    background-size: contain;
    margin-bottom: 30px;
}

.div4{
    width: 1190px;
    height: 900px;
    margin: 0 auto;
    background: url(../images//jingdong4.PNG) no-repeat;
    background-size: contain;
    margin-bottom: 30px;
}

.div5{
    width: 1190px;
    height: 900px;
    margin: 0 auto;
    background: url(../images//jingdong5.PNG) no-repeat;
    background-size: contain;
    margin-bottom: 30px;
}
ul{
    display: none;
    width: 60px;
    height: 300px;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin-top: 40px;
    margin-left: 1450px;
    
    border: 1px solid black;
    li{
        width: 60px;
        height: 60px;
        background: white;
        padding: 10px;
        text-align: center;
        box-sizing: border-box;
        &:hover{
            background-color: red;
            cursor: pointer;
        }
    }
}
 